easy · Act science
A physicist measures the time it takes for a ball to roll down a 2-meter ramp at different angles (15^circ, 30^circ, and 45^circ). He repeats each angle 5 times.
What is the primary benefit of performing 5 trials for each angle?
- To increase the total length of the ramp.
- To change the ball's mass automatically.
- To ensure that the ball reaches gravity.
- To reduce the impact of random error.
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